Keyboard perforator and counter



July 20, 1943. L. R. cooK ET AL KEYBOARD PERFORATOH AND COUNTER Original Filed No). 20, 1956 6 Sheets-Sheet 1 .INVENTOR LEWIS R. COOK BY MAURUS T. GOETZ Jfifi ATTORNE July 20, 1943. L. R COOK. ET AL Re. 22,350

KEYBOARD PERFORATOR AND COUNTER Original Filed Nov. 20, 1956 6 Sheets-Sheet 2 TENTHS 0 o o o o o o HUNDREDTHS THOUSANDTHS p IO INVENTOR LEWIS R. COOK BY MAURUS T. GOETZ J/6AW FIG. 2

July 20, 1943. 1.. R. cooK ET AL KEYBOARD PERFORATOR AND COUNTER Original Filed Nov. 20, 1956 6 Sheets-Sheet 3 INVENTOR LEWIS R. COOK MAURUS T. GOETZ ATTORNEY y 2 1943- 1. R. COOK ETAL KEYBOARD PERFORATOR ANi) COUNTER s Sheets-Sh eet 4 ori inal Filed Nov. 20, 1936 lNVENTOR LEWIS R. COOK BY MAURUS T. GOETZ ATTORNEY Original Filed Nov. 20, 1.936 6 Sheets-Sheet 5 LEWIS R. COOK MAURUS T. GOETZ ATTORNE L. R. coo ETAL KEYBOARD PERFORATOR AND COUNTER Original Filed Nov. 20, 1956 6 Sheets-Sheet 6 unw Reissued July 20, 1%43 KEYBOARD rrnronaroa AND COUNTER Lewis B. Cook and Maurus T. Goetz', Chicago, IlL,

assignors, by mesne assignments, to Teletypesetter Corporation, a corporation of Delaware Original No. 2,179,493, dated November 14, 1939,

Serial No. 111,795,.November 20,1936. Application for reissue January 16, 1943, Serial No.

74 Claims.

The present invention relates to composing systems and apparatus therefor and particularly to machines for preparing a form for the automatic control of line composing and casting machines.

The principal object of the present invention is to provide a simple, reliable, and efiicient apparatus for apprising an operator during the preparation of a control form for the automatic control of composing machines, of the totalization of actual and exact dimensions of the matrices to be composed in line of composition.

According to the exact-matrix-size method of measurement of the present invention, it is possible to measure matrix thicknesses in increments of .001" from .000" to .999", by employing a decimal method of counting character widths. Thus with complete accuracy, any existing matrix capable of being selected from a line casting machine magazine can be measured.

According to a feature of the present invention, full control of matrices from a plurality of magazines, for example, upper and lower main magazines and upper and lower side magazines of a mixer line casting machine may be efi'ected with the same high degree of accuracy.

To achieve the above and other objects of the invention, a keyboard perforator and counter is provided with a removably interchangeable keyboard. The keys of the keyboard are superimposed upon a corresponding series of keylevers which perform adual function of controlling a permutation selector mechanism of a perforating mechanism, and which, through suitable linkage, are arranged to control counting code bar elements contained in removable code bar units. The elements of each code bar unit are arranged to control three sets of counting vanes representoccur simultaneously in response to the operation of a keylever, through the instrumentality of a selector mechanism comprising the afore-mentioned counting vanes and the removable and interchangeable code bar units. Each movement of the ratchet is accumulated so that the combined movement of the three ratchet mechanisms is imparted to a matrix pointer in a manner similar to that disclosed in Patent No. 2,059,250 granted November 3, 1936, to H. L. Krum which,

briefly, consists of a pointer mechanism movable across a fan-shaped or sectoral dial to indicate to the operator the totalizations of the thicknesses of the matrices in the line of composition being prepared on the perforated tape.

A feature of the present invention consists in adapting the keyboard perforator and counter for use in that form of typographical composition that is predicated on the unit system of matrix grouping for composing tabular matter, which requires that the operator be informed at all times whether or not the remaining unfilled portion of the column measure is an even multiple of ens; or expressed in a dififerent way, whether or not the exact length of the unfilled portion of the line, measured in units (assuming that an 18-unit system is employed, in accordance with which an em represents 18 units of measurement and an en represents 9 units), is a. multiple of nine units. If the remaining portion is not a multiple of ens, the units indicator provided according to the present invention will automatically indicate to the operator the number of units which must be added or subtracted to make the unfilled portion of the line a multiple of nine units or ens. The unit indicator is used in conjunction with the matrix pointer already provided for exact measurement of matrices; to provide the precise indication required for tabular composition, and comprises a dial which is rotated in one direction by means of gearing meshed with a gear attached to the tenths ratchet of the differential accumulator, and a pointer movable in the opposite direction by means of gearing meshed with a gear attached I to the hundredths ratchet of the difierentialaccumulator. In this connection, the ratchet of the thousandths decimal position is not operated, due to the fact that it is not contemplated that the number of units assigned to an em" in any unit systemv will exceed ninety-nine. Heretofore the em quad has been divided into as many as thirty-two units. However, the scope or range 'of the application of the unit indicator of the present invention is limited only by the extent to which two ratchet mechanisms may be operated; that is, ninety-nine units. The relative positions of the dial and pointer at all times indi, cates to the operator the number of units to add or subtract from the remaining composition of the line to make the line fit a predetermined column or tabular width. The unit indicator may also be employed for preparing straight matter (as distinguished from tabular matter) in which event the operator composing the matter has, by the use of the unit indicator, access to a rapid means for measuring characte widths to an accuracy 01' one unit.

A further feature of the periorator and counter according to the present invention resides in the provision of atho'usandths indicator to inform the operator, by meims'of dial indication, as well' as pointer indication, at any point within the line, the exact difference in thousandths of an inch between the coluarm'measure and the cumulative set-wise thiciness of the assembled matrices and minimum space band thickness, or the exact cumulative set-wise thicknesses of the assembled matrices and minimum space band thicknesses. Since the thousands indicator supplements but does not replace the matrix pointer of the three-pointer indicator method disclosed in the cited patent granted to H. L. Krum, it is required that the differentiai' accumulator provided in the principal structure, and the thousandths indicatoridesigned as an attachment) be capable of simultaneous operation under control of the three counting ratchets. The thousandths indicator provides dial accumulation of actual matrix sizes expressed, in decimals and gives to the operator, for use in cases of marginal justification, a more accurate reading than is possible with the pointer type of indicator.

A more comprehensive understanding of the present invention may be had from the following description taken in conjunction with the accompanying drawings, wherein like reference characters represent similar parts throughout the several views.

In the drawings,

Fig. 1 is a front elevational view of a perforator and counter with parts broken away, showing the apparatus necessary for a clear understanding of the present invention;

Fig. 2 is across-sectional view taken substantially on line 2-2 of Fig. 1;

Fig. 3 is a fragmental sectional view illustrating the magazine shift mechanism;

Fig. 4 is a partial front elevational view of the unit indicator;

Fig. 5 is a fragmental sectional view taken on line 5-5 of Fig. 4;

Fig. 6 is a partial top view of the differential accumulator illustrating the application of the unit indicator thereto;

Fig. 7 is a front elevational view, with cover removed, of the dial reset mechanism of the thousandths indicator;

Fig. 8 is a cross-sectional view taken substantially on line 8-8 of Fig. '7;

Fig. 9 is a partial top view showing the application of the thousandths indicator to the differential accumulator;

Fig. 10 is a cross-sectional view taken approximately on the line Ill-Ill of Fig. 7;

Fig. 11 is a cross-sectional view taken approximately on the line l'I-l I of Fig. 7;

Fig. 12 is an elevational view partly in section, illustrating the dial reset mechanism;

Fig. 13 is a sectional view taken on line I2-I3 of Fi 12;

Fig. 14 is a sectional view taken on line il-ll of Fig. 9;

Fig. 15 is a partial cross-sectional view of a modification of the invention embracing a multiplicity of upper and lower magazines;

Fig. 16- is a linkage arrangement for controlling the shift positions of the modification Fig. 15;

position represents the sum of the thickest ends Fig. 17 is a modification of the counting ratchet feed mechanism, and

Fig. 18 is a view of the adjustable stop means for the counting vanes.

Referring to Figs. 1 and 2, the apparatus comprises a base 2| which supports a differential accumulator assembly, a unit indicator, a thousandths indicator, a three-pointer indicator, and space band adjusting mechanism indicated generally as 22, 23, 24, 25, and 28, respectively. The three-pointer indicator is of the type disclosed in Patent No. 2,083,570 granted June 15, 1937, to E. S. Larson and comprises a fan-shaped dial 30, a, matrix pointer 21, and a pair of space band pointers 28 and 29. Briefly, movement is imparted to the matrix pointer 21 through the counting mechanism of the present invention and a friction clutch 3|. As disclosed in Patent No. 2,083,570, the indicator dial 30 has adjacent its outer arcuate edge a scale or series of calibrations representative of a number of ems or picas in a line of maximum length, whichever unit is adopted as a unit of measure. The matrix pointer 21 moves along this edge of the dial from left to right, towards a zero indication in response to the totalization of the matrix thicknesses by the counting mechanism including the differential accumulator 22. Thus the distance from the pointer 21 to zero indicates the amount of space left in the line to be filled with matrices, when the line contains no space bands. However, when space bands are inserted in the line, the space remaining to be filled varies with the number of space bands inserted. So, to indicate the justiflability of the composed line, a pair of space band pointers 28 and 29 are provided, the distance between the pointers 28 and 29 indicating the amount of expansibility of the space bands. Since the distance from any operated position of pointer 28 to its zero or initial position represents the sum of the thin edges of all the space bands (whether one or more) in the line, and the distance from pointer 28 to the same initial or zero bands are inserted, is represented by the distance shown in between the matrix pointer 21 and any point between space band pointers 28 and 29. The differential or proportional movements of pointers 28 and 28 toward the left, as viewed in Fig. 1 (from the zero position), is fully set forth in Patent No. 2,083,608 granted June 15, 1937, to E. S. Larson, which also discloses in detail the space band adjusting mechanism 28 whereby the movements of the space band pointers 28 and 28 may be varied or adjusted for different types and sizes of space bands.

The base 2|, besides supporting the aforementioned mechanism, also supports at its front end a removable keytop assembly, indicated generally at 33 (Fig. 2), and houses a series of keylevers 34, a plurality of code bar units or counting magazines 35 and 36, a plurality of groups of counting vanes 31, and a permutation selector mechanism, indicated generally at 88, for controlling the operation of a perforator, indicated generally at (Fig. 1).

The removable keytop assembly 33 comprises a top plate ti and a bottom plate 42 which are slotted to receive a plurality of key rods 43.

Plates 4| and 42 are riveted together'at the right (Fig. 2) and are fastened at the rear to a vertical plate 44. Key rods 43 have keytops 45 and are prevented from being removed from the keytop assembly 33 by individual pins 45. The keytops 45 may, of course, be readily removable and replaceable as individual keytops, if desired. The keytop assembly 33 is carried at the rear on studs 41 adapted to engage slots in rear plate 44, and at the front on cross bar 48 of the base 2|. The studs 41 and 48 are provided to align properly the keytop assembly 33 with the plurality of keylevers 34. Keylevers 34 are pivoted on a common pivot rod and are normally held in a horizontal position by individual springs 52 compressed between the keylevers 34 and a spring retaining bar 53. Each of the forward ends of the keylevers 34 has laterally disposed portions 54 to coact with its associated key rod 43.

The keylevers 34 extend over a plurality of pairs of code bars 55 and 56 included in the perforator selecting unit 38. The bars 55 and 55 of each pair are supported (Fig. 1) by a pair of T-shaped rocker arms 51 and 58 mounted on pivot rods 58 and 5| and having oppositely offset lugs 52 and 63 which uphold the code bars 55 and 55, respectively, of the corresponding pair of code bars. The rocker arms 51 and 58 of each pair of code bars are pivoted to and reciprocate a permutation bar 54 which is articulated to one of a series of levers 55, pivoted on a common pivot rod 55 carried in the perforating unit 38. To the upper end of each lever 55 is pivoted a punch interponent 51 removably interposed between a punch hammer 58 and one of a corresponding series of punch elements 58. Punch elements 58 are carried in a punch assembly comprising guide plates 1| and 12 and die plate 13, each punch element 58 being surrounded by a helical stripper spring 14. A tape passes between the plates 12 and 13. Punch hammer 58 is pivotally carried in the base 2| and is arranged to be operated by a cam on a main operating cam sleeve 48 carried by the main shaft 32 in a manner described in Patent No. 2,859,250.

To effect the selective operation of interponents 51, each keylever 34 is arranged to depress one of the code bars 55 or 55 of each pair of code bars, and through the medium of rocker arms 51 and 58, lifts the other code bars either to advance or retract a corresponding permutation bar 64 to impart corresponding movement to the associated pivoted levers 55. The permutation bars 54 are set in characteristic combinations,

and for this purpose the code bars 55 and 55 are provided with notched upper edges, the bars of each pair being complements; that is, the high portions of one pair are opposite the low portions of the other bar of the same general pair. It is also noted that the permutation bars have no normal position and are moved back and forth by the keylevers.

Each of the keylevers 34 has pivoted thereto and extending vertically therefrom (Fig. 2), a pair of links 15 and 11 which are connected at their upper ends to levers 18 and 18, respectively. Levers 18 and 18 are rockably carried on rods 8| and 82, respectively, mounted in a magazine shift member 83 pivotally mounted at each end through a pair of trunnions 84 (Fig. l) journaled in a bearing plate 85 secured to the base portion 2|. The magazine shift member 83 is rockable to its counterclockwise and clockwise positions, respectively, by links 85 and 81 (Fig. 3) connected to the upper and lower magazine keylevers 88 and 88, respectively. When it is desired torock the magazine shift member 83 to its counterclockwise position to bring levers 18 into position to operate the bell cranks 8| (Fig. 2) of the upper magazine counting mechanism, keylever 88 is depressed, thereby operating link which, through bracket 82 secured to member 83, imparts counterclockwise rotation to member 83 (Figs. 2 and 3), to rock the magazine shift member 88 to-its counterclockwise position, whereat it is held against an adjustable eccentric screw 83 by the action of a spring actuated jockey lever 84 on a detent 85 aillxed to member 83. Again, when it is desired to rock the magazine shift member 83 back to its right-hand or clockwise position to bring levers 18 into cooperative relation with' the bell cranks 85 associated with the lower magazine selector mechanism, the lower magazine key rod 81 is depressed to cause the lower magazine keylever 88 to be operated, which will, in turn, cause link 81 to be drawn downwardly to impart, through bracket 88, clockwise movement to member 83 to rock member 83 against an eccentric adjusting screw 88 where it will be held by the jockey lever 84 acting on detent 85.

Bell cranks 8| and 85 (Fig. 2) are individual to a lever 18 and 18, respectively, and are carried in a case shift member I8I, the levers 8| being pivotally carried on a common pivot rod I82 and the levers 85 being pivotally carried on a common pivot rod I83. Each pair of bell crank levers 8| and 85 are biased attrahently by a common spring I84 which tends to hold the horizontal arms of the bell cranks 8| and 85 against a common stop bar I85. As shown in Fig. 1, case shift member ml is slidably mounted on pins I85 and I81 carried in the base 2|, and may assume either of two alternate positions under control of the shift keylever I88 and unshift keylever I88. When the shift keylever I88 is depressed by the actuation of its associated key rod it imparts, through a link III, clockwise rotation to a lever |I2 pivoted at 3 in base 2|. Lever II2, through a stud II4, rocks bell crank lever ||5 pivoted at 5 counterclockwise, bringing lever I I5 to its position shown in Fig. 1 which, through its articulation with case shift member I8I, causes member IN to be shifted to its leftward position. Upon actuation of keylever I88 by its associated key rod, counterclockwise rotation is imparted through a link II1 to a lever B pivoted at 8 to impart, in turn, through stud I2I, clockwise rotation to a lever I22 pivoted at I23. Lever I22 is articulated to case shift member IM and is provided with an extension I24 terminating in a detent to cooperate with a spring actuated detent member I25. The clockwise rotation of lever I22 about pivot I23, as previously described, will impart rightward movement to case shift member I8| upon its pins I85 and I81. Member I 8| is retained in its rightward or leftward position by the detent member I25.

Bell crank levers 8| and 85 (Fig. 2) are arranged to act upon counting elements I25 carried in' counting magazines 35 and 35. Counting magazine 35 is slidable on guide rails I21 and I28 and counting magazine 35 is slidable on guide rails I28 and I 3|, so as to render counting magazines 35 and 35 removably interchangeable in base 2| in accordance with the font of type or magazine for which the perforated tape is to be prepared and in a manner disclosed in copending application Serial No. 582,742, filed De cember 23, 1931, by L. M. Potts and Patent No. 2,080,424, granted May 18, 1937, to E. S. Larson et al. The counting magazines are provided with slots to receive the counting elements I26, which are spaced at substantially one-half the keylever spacing (Fig. 1), so that two sets of three counting elements can be provided for each keylever, the case shift member "II, as previously mentioned. being shiftable to bring bell crank levers BI and 96 into operative alignment with one or the other of the sets of counting elements of each pair of sets allotted to each keylever. To compensate for shifting of bell cranks 3| and 36, the latter are provided at the free ends of their horizontal arms with broadened surfaces I32 and I33 respectively. In this manner, levers 13 and 18 will be operative on their respective bell cranks 3| and 36 irrespective of the position of the case shift member I6I.

Each counting element I26 is, in the present embodiment, one of a set of three elements corresponding to the tenths, hundredths, and thousandths decimal positions. Of course, counting elementsl26 may be made in one piece, but it has been found that making them in separate parts facilitates manufacture. Each of the counting elements I26 is provided with a projection I34 arranged to be positionable under a retaining plate I35. When the three elements I26 forming one complete set of counting elements are installed, a locking bar I36 'is-inserted and the elements I26 are thereby locked in positicn so that they cannot fall out of thecounting magazine during handling or installation. 'Io eflect their removal, the locking bar I36 is removed and the elements I26 are shifted toward the right whereupon they may be lifted out. Each one of the counting elements I26 has a vertical projection I31 corresponding to its value in each decimal position.

Arranged above each counting magazine 35 and 36 are three groups of counting vanes, each group comprising nine vanes representative of each of the digital positions 0 to 8, the digital positions being counted from the right toward the left as viewed in Fig. 2, the right-hand vane in each group representing zero (0) The counting vanes 31 extend across the entire width of the apparatus transversely of the keylevers and counting elements I26, the ends thereof having the conformation shown in Fig. 1, whereby each end has a laterally disposed portion I36 (Fig. 2) having journaled pivotal studs. In this manner the vanes 31 depend from their pivots and are swingable by the vertical projections I31 on the counting elements I26. Each of the vanes 31 has secured thereto near its left-hand end (Fig. l) a right-angled bracket I33. The brackets I33 are arranged in stepped or diagonal manner across each group of nine vanes, the forward or leftmost bracket, as viewed in Fig. 1, being secured to the forward or zero vane 31 in each group. The horizontal arm of each of the brackets I33 (Fig. 2) is provided near its extremity with an aperture through which passes a vertical connecting rod I4I which carries adjacent the horizontal arm of each bracket I33 an adjustable nut I42 with its associated lock nut. When a vane 31 is rotated clockwise by a projection I31 upon leftward movement of a counting element I26, rod I will be actuated downwardly. Although a single rod MI is associated with a bracket I33 and vane 31 in each vertical group of vanes, nevertheless, through the interconnection shown, the operation of one vane in a vertical group will affect the rod I4I independently of the other vanes and brackets in the vertical group.

The upper end of each rod I is articulated to the horizontal arm of a bell crank lever I43. Bell cranks I43 are interconnected by individual links I45 between their vertical arms and the respective depending arms of a series of stop bars I46 mounted on pivot rod I 41. The stop bars I 46 are biased in a clockwise direction to their unoperated position by individual springs I48 against the bottom of the notches of a guide comb I43 fixed to base 2|. This action of spring I46 serves, through link I45, to hold bell crank I43 in its counterclockwise position, and thereby, through rod I 4| and brackets I33, to maintain the vanes 31 in their counterclockwise position against the wards or projections I66 on an adjustable stop bar I16 (as shown in Fig. 18) to return the counting elements I26 to their right-' ward position. The stop bar I16 isadjustably mounted by clamp screws 486 (shown in section) and'is provided for the purpose of obtaining an accurately located fixed back stop for each vane 31. A corresponding series of stop bars I5I and I52 is provided for the hundredths and thousandths decimal positions, respectively. Thus, a series of nine stop bars is associated with each group of nine counting vanes.

From the foregoing description, a key rod 43 acts through keylever 34 to move links 16 and 11 downwardly, which movement isimparted throughlevers '18 or 13 to bell cranks Si or 36, depending upon which-of the levers 13 or 13 is in cooperative engagement with its respective bell crank lever 3I or 36 as determined by the clockwise or counter-clockwise position of the magazine shift member 63. Since both links 16 and 11 associated with a keylever 34 are operated simultaneously, levers 13 and 19 are similarly oper ated, but if the member 33 is in the position shown in Fig. 2,'lever"1'6 only will be operative upon its associated. bell crank lever 36 to impart clockwise rotation to lever 36, which, in turn, causes the counting elements I26 associated therewith to be moved leftwardly. The latter movement of counting elements I26 will, through their vertical projections I31, actuate one vane 31 in each group of vanes to impart downward movement to the rod I4I operatively associated with the actuated vane, and to rotate in turn, through bell crank I43 and link I45, stop bar I46, I5I, or I52 corresponding thereto, counterclockwise against the action of its retractile spring into the path of a ratchet feed lever I53, I54 and/or I55.

Counting ratchet feed mechanism A counting ratchet feed mechanism i provided for each of the three counting positions; that is, a counting ratchet is provided for the thousandths position, a second counting ratchet with its associated differential unit is provided for the hundredths position, and a third counting ratchet with its associated differential unit is provided for the tenths position. Each counting ratchet may be variably fed from one to nine teeth under the control of the nine stop bars I46, I5I, or I52 of each group which are selectably moved under the control of the key rods 43 into the path of the counting ratchet feed lever by the operation of the vanes 31, as previously described. It will be seen, in Fig. 1, that there is an individual stop bar for each digit from 0 to "8 inclusive, but that there is no stop bar for digit 9. since this position of the feed lever I53, I54,

or I55 is controlledby a fixed stop I56 which forms a part of the guide casting I43. Accordingly, there is no stop bar and no controlling vane 31 provided for a 9,se1ection.

In the present embodiment, the ratchet. feed levers I53, I54, and I55 are pivotally mounted on' the angular distance through which lever I53 is permitted to move by the selected stop bar; that is, pawl I62 moves .a distance of one tooth for each spatial distance between stop bars I46.

' During the final portion of the cycle of cam I65,

. spring I11 becomes effective to return ratchet the hubs of their respective counting ratchet wheels I51, I58, and I59. Each of the ratchet feed levers has a vertically extending arm I 6| (Fig. 1) at the extremity of which is carried a pawl member I62 biased by a spring I63 into en-- gagement with the peripheral teethof'its associ ated counting ratchet wheel. with the selection of a stop bar I46, I5I, or'I52, as previously described, .bythe operation of a keylever 34, the keylever 34 operates a universal bar I64 (Fig. 2) which, in a manner similar to that disclosed in Patent No. 2,059,250, trips a clutch which initiates the rotation of the mainoperating cam sleeve 40 carried by the main shaft'32 and driven therefrom through one cycle of operation for each tripping of the clutch by power transmitted to shaft 32 by a motor (not shown). In operating a key lever it is not necessary to hold the keydepr'essed throughout a cycle of operation, becau""";immediately after the clutch is tripped, the operator may release the key.

The mainoperating cam sleeve 40mounted on main shaft-32 carries cams for operating the counting ratchet feed mechanisms, a cam I65 (Fig. 1) being provided for each of the three decimal groups. Cams I65 have two similar cam contours such that for each one-half revolution of the cam sleeve 40, which is driven by a half revolution clutch, a cycle-of operation is completed.

'That is, to register a matrix width on the dial communicated therefromto slide I12 through a Simultaneously feed lever I53 to its clockwise or leftward position against eccentric adjusting screw I18 carried on bracket I48. Spring I11 also, through lever I53 and roller I16, tends to return slide I12 and (through spring I13) lever I61 to their normal leftward position shown in Fig. 1. If ratchet feed pawl I53 is permitted to move a distance representative of nine units, cam surface I88 thereon will strike against fixed stop I56, and lever I53 will thereby assume the dotted line position shown in Fig. 1. As ratchet feed lever I53 is thus returned by spring I11 in a clockwise direction against its stop I18, pawl I62 becomes effective to rotate ratchet I51 in a clockwise direction, which is imparted to shaft I19 as will hereinafter appear. A'spring. actuated detent lever I8I holds ratchet I51 against backslipping. Summarizing then, upon a single depression of a key lever 34,

the clutch is tripped to initiate rotation of sleeve 48, and hence cam I65, which after rotating the first ninety degrees will cause pawl I62 to ride over a number of teeth to pick up that tooth corresponding to the stop I46 selected; then upon completing the second and final ninety degrees the cam I65 will permit springs I11 to return pawls-I62 to their clockwiseposition to impart,

spring I13 tensioned between stud I69 and apin I14 on slide I12. Spring I13 thusJ-provides-a yielding interconnection between slide I 12 and bell crank lever I61. The left end of slide I12 also has a slot by which-slide I12 is carried on a stud I15. 1

Carried on slide I12 intermediate pin I14and stud I15 is a roller I16 arranged to coact with the ratchet feed lever I53 (or I54 or I55).

When a stop bar I46 is selected upon the actuation of a key rod 43 and the rotation of cam I is ini- .tiated, bell crank lever I61, during the first portion of the cycle of cam I65, is rotated clockwise, and

communicatesjto slide I12 through spring I13 a;

motion to bring roller I16 into'engagement with ratchet feed lever I53, whereby lever I53 is rotated counterclockwise to carry its depending arm toward the-right against the action of retractile spring I11 until the cam surface'at the lower end of lever I53 strikes theselected stop bar I46.

Further "inotion of slide n: by lever I61 is prevented, but through the yielding connection therebetween; namely, spring I 13, stud I69 moves 1 in slot "I, thus tending to stretch spring I13.

As ratchet feed lever I53 is rotated in a counterclockwise direction, pawl I62 (Fig. 1) rides over a number of teeth on ratchet I51 corresponding to .through the differential accumulator mechanism rotation to shaft 255, and hence incremental movement. to pointer 21 without depressing key lever 34 a second time.

It will be observed that stop bars 146 and I5I and I52 are evenly spaced ina straight line ar-' rangement and that the cam surfaces I on the lower end of ratchet feed levers I53, I54, and I55 are so designed that this even spacing of the stop bars can be translated into even angular steps in the motion of the ratchet feed levers. Accordingly, the contour of cam surface I80 is a particular feature of the counting ratchet feed mechanism, since it enables evenly distributed stop bars to impart evenly spaced increments of angular motion to ratchet feed lever I53 (or I54 or I55).

Dz'fierential'accumulator mechanism Iator mechanism 22, which is controlled by the three counting ratchet feed mechanisms including the ratchet feed levers I53, I54, and I55, and their associated ratchet wheels I51, I58, and I59, respectively, As shown, there is a counting ratchet feed mechanism associated with each of the groups of counting vanes and stop bars controlled thereby for counting in the tenths, hundredths, and thousandths decimal positions. It is understood thatstop bars I46, I5I, and/or I52 are selected simultaneously to effect the simultaneous operation of the counting ratchet feed mechanisms, but for purposes of simplifying the description, these operations will be described separately beginning with the thousandths ratchet feed mechanism, followed by the hundredths and finally the tenths counting mechanisms. Rotation of the thousandths ratchet I59 is suitably com bined with rotation of the hundredths ratchet I58, by means of the differential mechanism associated with the hundredths ratchet I58. The resulting motion is then combined with the motion produced by the tenths ratchet I51, by means of a differential mechanism associated with the tenths counting ratchet to produce a total angular rotation of shaft I18 which is exactly proportional to the decimal value of the matrix thickness being counted. In the present embodiment the gear ratios are so designed that shaft I18 will be moved .075 by the motion of one tooth on the thousandths ratchet I 58, .'75 by the motion of one tooth on the hundredths ratchet I58, and 'I.5 by the motion of one tooth on the tenths ratchet I 51. If' all three ratchets are fed simultaneously one tooth, the resulting angular motion will be the sum of the three aforementioned angular motions or 8.325". The decimal relation between the three ratchet mechanisms is corollary to the use of a decimal counting system. The direction of gear rotation is indicated in Fig. 2 ma conventional manner by a dot and dash system; that is, a dot indicates motion toward the observer, and a dash indicates motion away from the observer.

Journaled in bushings I82 and I88 carriedin brackets I84 and I85, respectively, is a shaft I85. Bushing I82 is clamped to bracket I84 by lock rightwardly extending portion of shaft 284. The right end of sleeve 225 is carried on a shaft I19 journaled in a bushing 221 in a bracket 228 mounted on the base 2|. To the right end of tion 28I on which is supported the ratchet feed nuts I81. The aforementioned ratchet wheel I59 associated with the thousandths counting ratchet feed mechanism is fixed to shaft I85 through set screw I88, and carried on the hub portion I88 of ratchet wheel I58 is the ratchet feed lever I55. The rotation of ratchet I58 as imparted to it by ratchet feed lever I55 is such that the lower por tion approaches the observer as indicated conventionally by a dot. The ratchet feed lever I55 is held on hub I88 by a washer I8I which, in turn. is held against the shoulder of hub I88 by a nut I82 fitted on the threaded portion of said hub. Axial movement of shaft I85 is prevented by the abutment of hub I88 against bushing I82 and a collar I88 fixed to shaft I85 adjacent bushing I88.

Fixed to shaft I85 adjacent bracketl85 and to the right thereof (as viewed in Fig. 2), is a gear I 84 which is arranged to mesh with an idler gear I85 carried on a stud I95 secured to bracket I85. Idler gear I85 in turn meshes with an internal gear I81 carried on studs I88 afflxed to a disc I99 integral with a sleeve 28I. Sleeve 28I' is fixedly carried on a further sleeve 282 by means of a screw 288. Sleeve 282 is carried at its left-hand end on an. extension of shaft I85, which thus forms a bearing for one end of said sleeve, the other end of which is carried on a leftward extending portion of a shaft 284. The hundredths counting ratchet I58 is carried on sleeve 282 adjacent sleeve 28I. a washer 285 being interposed between the hub portion of ratchet I58 and the sleeve 28I to holdratchet feed lever I54 on said hub portion. In this manner, ratchet I58 isioose ly mounted for rotation on sleeve 282 and ratchet feed lever I54 is, in turn, loosely mounted for rotation on the hub of ratchet I58.

Sleeve 282 terminates at its rightward end in a gear 288 which meshes with a pair of planetary gears 281 and 288 carried on ratchet wheel I58 by studs 288. Planetary gears 281 and 288, in turn, mesh with an internal gear 2 carried by studs 2I2 on a disc 2I8 aflixed through its hub portion to shaft 284. Shaft 284 is journaled in a bushing 2I4 carried in a bracket 2I5 mounted on the base 2I. Shaft 284 extends rightwardly from bracket 2I5 and has affixed thereon adjacent bushing 2 l 4 a gear 2 I 5 which meshes with an idler gear 2" carried on a stud 2I8 afllxed to bracket 2I5. Idler gear 2", in turn, meshes with an intemal gear 2I8 supported by studs 22I on a disc 222 integral with a sleeve 228. Sleeve 223 is mounted on and secured to, by means of a screw 224, a sleeve 225 carried at its left end on the lever I58. Lever I58 is held-on hub 28I by a washer 282 interposed between sleeve 228 and hub 28I. Sleeve 225 terminates at its right end in a gear portion 283 which meshes with 'a pair of planetary gears 284 and'285 carried on ratchet wheel I51 by studs 285. Planetary gears 284 and 285, in turn, mesh with an internal gear 281 held by means of studs 288 on a disc 288 which is afflxed through its integral hub portion to shaft I19.

In counting a three-digit matrix thickness, one of the stop bars I52 in the thousandths'counting position is moved into the path of ratchet feed lever I55 so that the ratchet feed lever will be arrested by engagement of cam shaped end I88 of the ratchet feed lever with stopping surface 24I of the selected stop bar I52. Locking bail 242 pivoted at 248 is held clear of projections 244 of stop bars I52 by a cam (not shown) carried by the main operating cam sleeve mounted on main shaft 82. Other locking bails 241 and 249 are similarly supported adjacent to stop bars I5I and I45, respectively. When rotation of the main operating cam sleeve is initiated by operation of universal bail I54, locking bails 242, 241, and 249 are lowered by their operating cams into blocking relation to stop lever projections 244,'with the projections of unoperated stop bars I45, I5I, and I52 disposed at the right of the locking blades of bails 248 241, and 2, respectively, and the projections of operated stop bars disposed at the left thereof, as viewed in Fig. 2. Near the end of a cycle of operation of the cam sleeve, bail 242, 241, and 249 are lifted to their ineffective positions by their operating cams. The upper extension 245 of ratchet feed lever I55 carries feed pawl 245 which, upon oscillation of lever I55, imparts rotation to ratchet I58 which, in turn, imparts like angular rotation to shaft I85 and hence to gear I94. Gear I94, through idler gear I85, ro-

tates disc I89 in the opposite direction, and hence through sleeve 282, rotation is transmitted to gear 285 similar to disc I98. Through planetary gears 281 and 288, gear 285 rotates internal gear 2 and disc 2I3 in a direction opposite to the direction of rotation of gear 288. Such rotation of disc 2I8 causes like rotation of shaft 284. Simultaneously with the operation just described, one of the stop bars I5I in the hundredths counting position has also been selected and has been maintained in its operated position by locking bail 241 in a manner similar to bail 242. correspondingly, ratchet feed lever I54 oscillates until its cam end I88 strikes the selected stop lever I5I, and on its being retracted by its spring 248 (similar to spring I11, Fig. 1), rotational motion is given to ratchet I58 in a direction indicated by the conventional sign, which is similar to that imparted to ratchet I59 and, through the differential gearing between ratchet I59 and disc 2I3, to said disc 2I3. Accordingly, the motion of ratchet I 58 is added to the motion already communicated to disc 2I8 and hence the. combined motions are imparted, through disc 2I8, to shaft 284. In other words, the rotation transmitted to shaft 284 is the combined rotation governed by the thousandths and hundredths counting mechanisms.

This combined rotation communicated to shaft 204, is, in turn, transmitted to gear 2I6, and through idler 2I1 to internal gear 2I9, and hence disc 222. The direction of rotation imparted to disc 222 is opposite to that given to shaft 204. The rotation of disc 222 is transferred through sleeve 225 to gear 233, which rotation is imparted through planetary gears 234 and 235 to internal gear 231, and hence disc 239, giving to disc 239 a rotation in a direction opposite to that imparted to disc 222. This rotation of disc 239 is communicated to shaft I19. Thus, as so far described, the rotation of shaft I19 is proportional to the combined rotations of ratchets I58 and I59.

In the same manner as previously described for the thousandths and hundredths operations, a stop bar I45 has been simultaneously selected and maintained in its operated position by a lock bail 249. The ensuing operation of ratchet feed lever I53 governed by the particular stop bar I46 selected, imparts a rotation to ratchet wheel I51 similar to that given to ratchet wheels I58 and I59 ove an extent determined by the stop bar selected. This rotation is the same as that already communicated to disc 239 just described, and hence through planetary gears 234 and 235, additional rotation in the same direction is imparted to disc 239 in such a manner as to superadd the rotation of ratchet I51 to that of disc 239, which combined rotation is transmitted to shaft I19. Thus, the rotation of the tenths ratchet I51 is combined with the rotations of the hundredths ratchet I58 and the thousandths ratchet I59 to produce a totalized rotation of gear 229.

As previously described, beveled gear 229 moves varying angular distances according to the particular key operated. Each angular distance is directly proportional to the decimal value of the matrix thickness being counted. Rotation of beveled gear 229 is communicated to a beveled gear 25I meshed therewith and fixed to a shaft 252 appropriately journaled in brackets (not shown) mounted on the base 2|. As shown in Fig. 1, shaft 252 carries on its right end a spur gear 253 which meshes with a spur gear 254 fixed to a shaft 255 also suitably journaled in brackets (not shown) mounted on the base ZI. A worm not shown) is affixed to the right-hand end of shaft 255, in a manner clearly set forth in Patent No. 2,059,250, which worm meshe with a worm wheel 2'56 associated with the counting clutch 3|, thus completing a gear train between the differential accumulator mechanism 22 and counting clutch 3|.

The foregoing description relates to a keyboard perforator and counter which is capable of counting exact thicknesses of matrices contained in a line of composed matrice measured to the thousandths of an inch. However, the device so far described is not limited to the exact-matrix-size method of totalizatio-n, but may readily be employed for counting any unit font with complete accuracy, on a unit basis. Instead of arranging the counting elements I26 of counting magazines or code bar units 35 or 36 in such a manner as to govern the differential accumulator 22 according to the tenths, hundredths, and thousandths decimal positions, the counting elements I25 may be arranged to govern. only the tenths and hundredths ratchet mechanisms, the thousandths position being controlled only by counting elements. With this arrangement, it is apparent that the diilerential accumulator 22 will act to count units from one to ninety-nine. However,

it is customary, in employing the unit system of counting, to divide an em space or quad on a basis of eighteen units and to assign each matrix of a font to a certain one of eighteen groups. Due to the fact that unit counts from one to ninety-nine may readily be obtained, the device according to the present invention thus extends the scope of counting operations possible by the device disclosed in U. S. Patent No. 2,043,231, granted June 9, 1936, to S. Bracken et al. The latter device is capable of counting units from five to thirty-two units.

Unit indicator The capability of the device just described to totalize matrices according to the unit system lends itself readily for use in connection with the composition of tabular matter. Accordingly, there is disclosed in Figs. 4, 5,. and 6, an embodiment of the present invention consisting of the unit indicator 23 which may be employed in conjunction with the matrix pointer 21 to provide the precise indication required for tabular composition. As is the practice in composition based on the unitsystem wherein an em in any type face or font is counted as eighteen units, this counting value results in a scale indication of one keyboard em; hence, when the unit indicator is employed, the pica indication on the main pointer unit 25 can be converted into ems either by changing scales or by operation of the adjustment indicated generally as 40 (Fig. 1) disclosed in Patent No. 2,083,570. Use of the unit indicator 23 for tabular composition assumes that any thickness assigned to the space band, within its operating range, will be counted in the same manner as matrices; that is, by counting code elements I26. For tabular work using the unit indicator, pointers 28 and 29 are not employed, and to prevent their motion, the structure indicated generally as 26, is rendered ineffective.

To adapt the unit indicator 23 to the principal structure of the keyboard perforator and counter of the present invention, an additional gear is supplied to the tenths and hundredths ratchet mechanisms to control the operation of gears carried on the unit indicator shaft 265, as shown in Fig. 6. In Fig. 1 is shown a fragmental portion of the unit indicator 23 to indicate its relative position with respect to the differential accumulator 22 when the unit indicator is employed. In referring to the modification of the differential accumulator shown in Fig. 6, the same reference characters will be employed to designate similar parts that are shown in Fig. 2. The differential accumulator shaft 204 associated with the hundredths ratchet mechanism is shown as carrying the ratchet wheel I58, on the hub of which is mounted the ratchet feed lever I54, carrying pawl I69. Fixed to ratchet wheel I58 0n studs 251 is a gear 258 which carries on studs 259 a pair of planetary gears (not shown) comparable to the planetary gears 201 and 208, shown in Fig. 2 which, in turn, mesh with internal gear 2 carried on studs 2I2 by disc 2I3. Shaft 204 is journaled in bracket 2I5, as described in the principal embodiment, and extends rightwardly to form a support for internal gear 2I9 and disc 222. Ratchet wheel I51 in the tenths position is Shown in the same relative location as in Fig. 2, and carries the ratchet feed lever I53 mounted on its hub. To ratchet Wheel I51 is fixed, by means of studs 26I, a gear 262 which carries on studs 263 a pair of planetary gears 264 comparable to gears 234 and 236 shown in Fig. 2. The latter gears mesh withinternal gear 231, which is carried on stud 238 by disc 239. To the right end of shaft 118, journaled 'in bracket 228, is the beveled gear 229 which meshes with the beveled gear 25! liked to shaft 252, which; through the gear train disclosed in Fig. 1, transmits the combined actuations of the tenths and hundredths positions of the differential accumulator to matrix pointer 21 which, as previously mentioned, moves across a keyboard em scale to indicate to the operatorthe-amount of space left in a line of composition, in a manner well known in the prior art and exemplified by the above mentioned patent.

The unit indicator 23, according to the modified form of the invention, comprises the aforementioned shaft 265 journaled in bushings 266 and 261, in brackets 268 and 268, respectively, mounted on base 2|. To the left end of shaft 265 is fixed a gear 21l which meshes with gear 258 which has been added to the hundredths ratchet mechanism for the purpose of controlling pointer 212 of the unit indicator. Loosely mounted on shaft 265 adjacent bushing 261 is a gear 213 which meshes with an idler gear 214 carried on stud 215 afilxed to bracket 268. Idler ear 214, in turn, meshes with the gear 262 added to the tenths ratchet mechanism for controlling the movement of dial 216 of the unit indicator. Gear 213 is integral with a sleeve 211 which, as shown in Figs. 5 and 6, has a flange 218. Also carried on shaft 265 and having a slot and key connection with sleeve 211 is a sleeve 21.8. Integral with" sleeve 219 adjacent the right end thereof (Fig. 5), is a flange 28l to which dial 216 is riveted.

Slidable on sleeve 218 is a sleeve 282 having integral'therewith a disc portion 283 and a flange portion 284. Between the disc portion 283 and flange 218 is a helical compression spring 285. Spring 285 normally tends to urge sleeve 282 rightwardly but is restrained therefrom by a lever 286 (Fig. 5), pivoted at 281, which carries at its extremity a roller 288 coacting with disc 283. Lever 286 is normally held against a stop 238 by a. spring 29l which is sufliciently strong to overcome the helical compression spring 286. Pivotally connected to lever 286 is a link 282 which cooperates with a cam 218 carried on the reset or -matrix pointer return sleeve 382 (Fig. 9) carried at the rear of the main shaft 32, and which functions upon the operation of the pointer return key to actuate, through lever arm 288, lever 286 (Fig. 5) rightwardly for a purpose which will presently appear. To flange 284 is riveted a disc 283 carrying a pair of diametrically disposed pins 284 and 286, so located that'they engage and partially extend through one, pair of nine pairs of holes 286 (Fig. 4) in the dial 216.

The right end of shaft 266 is journaled in a bushing 281 carried in bracket 288, and positioned between bushing 281 and the right end of sleeve 219 is a sleeve member 289 having an integral flange 38! at one end, and fixed to the other end of sleeve 288 is a collar 382. Sleeve 289 carries the pointer 212 which is arranged between flange 38] and a disc 383. Pointer 212 is frictionally held between flange 38! and disc 383 by a helical compression spring 384. Sleeve 288 is fixed to shaft 265 by a set screw 385, which also serves to attach collar 382 to sleeve 299. Thus it is observed, from Fig. 5, that pointer 212 is rotatable with shaft 265 through the medium of sleeve 288, and that dial 218 is rotatable with sleeve 218.

A quick and simple manual method for engaging pins 284 and 295 with the holes 286 in alignment with the'unit value to which the pointer must be restored during the pointer return operation, as will hereinafter appear, is also provided as shown in Figs. 4 and 5. This feature comprises a knurled knob' 306 fixed to a shaft 381 which is slidably and rotatably mounted on a U-shaped bearing 388 secured to the cover 388 of the unit indicator. Riveted to the end of shaft 381 is a disc 3 equipped with a friction facing 8l2. Also carried on shaft 381 and disposed between the left-hand bearing of the U-shaped' bearing 388 and a collar 3|3 aflixed to shaft 381 is a helical compression spring 3 I 4. In this manner, shaft 381 is normally held in its rightward position by the action of spring 3 upon collar 3I3. When it is desired to engage pins 284 and 285 with a certain desired pair of holes 296 in dial 216, the shaft 3811s, by means of knurled knob 386, urged leftwardly until the facing 3|2 engages the disc 283, and further movement of shaft 381 toward the left will carry sleeve 282 leftwardly to remove pins 284 and 285 from holes 286. When in this position, the knurled knob 386 may be turned to bring pins 284 and 295, through the instrumentality of the frictional engagement between facing 3I2 and disc 283, into position to engage a new pair of holes 286 as determined by the desired stop or zero position of the pointer 212.

From the foregoing, it is observed that the operations of the tenths and hundredths ratchet mechanisms of the difierential accumulator not only govern the rotation of shaft 252 and hence the movement of matrix pointer 21, but also, through gears 258 and 262, control the rotation of pointer 212 and dial 216 in opposite directions. The purpose of moving the dial and pointer in opposite directions is to convert a decimal system into an eighteen-unit system,

The object of a unit indicator is to advise the operator, at any time within the composition of the line, whether or not the remaining unfilled portion of the column measure is an even multiple of ens (which is equivalent to one-half em or nine units), or, expressed in a different way, whether or not the exact length of the unfilled portion of the line, measured in units, is a multiple of nine units. When the pointer 212 is opposite a 8" graduation on dial 216, a condition obtains wherein the unfilled portion of the line is a multiple of nine units, which condition is known in the typographical art as being on the wheel. If the pointer indication is +1 the operator is then advised that the composition is one unit off the vwheel (add), and to get on the wheel" it is necessary to add one unit, which would be accomplished by using a ten unit space or leader instead of the usual nine or eighteen unit space or leader thenext time one is required in the line. Similarly, +2", +3,and +4 advise the operator to add two, three, or four units, respectively, in order to get on the whee If the pointer 212 indicates -1" the operator is thereby advised that the composition is "one unit off the wheel (subtract) and to get on the wheel it is necessary to subtract one unit, which could be accomplished by using an eight-unit space or leader instead of the usual nine unit, or eighteen unit space or leader the next time one is required. Similarly, -2, -3", nd 4" advise the operator to subtract two, three, or four units, respectively, in order to get on the wheel.

It will be noted that the dial moves only when the tenths ratchet is operated, and then it moves in a direction opposite to that of the pointer. This, as previously indicated, is necessary in order to convert a decimal system, based on multiples of ten, to an eighteen-unit system, based on multiples of nine. Thus, starting from a zero position of the pointer with respect to the dial, the nine-unit count is accomplished by the hundredths ratchet I56 advancing nine, teeth and thus through gear 259 rotating the pointer 212 counterclockwise (as viewed in Fig. 4) through an angular distance of 180", while the tenths ratchet I51 is unoperated so that the dial remains stationary, resulting in a motion of the pointer, relative to the dial, of 180, or another zero reading.

Starting froma zero position of the pointer 212 with respect to the dial 216, an eighteen-unit count is accomplished by the hundredths ratchet I58 advancing eight teeth, and thus rotating the pointer 212 counterclockwise through an angular distance of 160, while the tenths ratchet I51 is advancing one tooth to rotate the dial 216 clockwise through an angular distance of 20 resulting in a net motion of the pointer, relative to the dial, of 180, or another zero reading. In the same manner it may be shown that for any multiple of nine units up to and including ninety-nine units, the net angular motion of the pointer relative to the dial, is 180.

A counting value which is not a multiple of nine units, for instance seventeen units, will now be considered. Starting from a zero position of the pointer with respect to the dial, a seventeenunit-count (as well as 26, 35, 44, 53, 62, 71, 80, 89, and 98) would result in the pointer 212 being moved, by the actuation of ratchet I58 through an angular distance of seven teeth, counterclockwise through an angular distance of 140, while the dial would be moved clockwise, by the operation of ratchet I51 one tooth, through an angular distance of 20, resulting in a net motion of the pointer 212, relative to the dial 216, of 160, or a dial reading of +1, which is indicative of the fact that the composition is "one unit off the wheel (add) which is as expected (since one unit must be added to get "on the wheel) Similarly, starting from zero, a nineteen-unit counting value (as well as 28, 37, 46, 55, 64, '73, 82 or 91 unit counting values) would result in a net angular motion of the pointer, relative to the dial, of 200, or a dial reading of 1, which is indicative of the fact that the composition is one unit off the wheel (subtract) For a ten-unit count or a one-unit count, the 1 reading would be effected by a 20 relative angular movement between dial 216 and pointer 212. During this operation, the pointer 212 remains stationary, motion being imparted only to the dial.

At the end of each line, the return key is actuated in the usual manner, and the unit indicator is returned to its zero position automatically in the following manner:

Dial 216 is provided with holes 296, one for each graduation, and two stop pins 294 and 295 pass through two diametrically opposite holes 296 from the rear of the dial. As previously described, the two stop pins are mounted on a stop disc 293 to the rear of and concentric with the dial 216. When in normal position for counting character widths, these stop pins 294 and 295 extend through the holes 296 in the dial 216, but not far enough to interfere with the motion of the pointer 212. The stop disc 293 and pins 294 and 295 are held in this normal position against the compression of spring 265 by the return" lever 286 which is held against a. fixed stop 269 by a spring 29l.

Upon actuation of the return" key, the return lever 286 is pushed forward (toward the.

ing on the cam 216 being such that this actionoccurs before the pointer 212 can be moved by the counting mechanism or difierential accumulator and continues in action at least until all parts are restored. Then, since the return keylever has corresponding counting elements I26 associated with it for accomplishing a nine-unit indication in the removable counting magazine 35 or 36, the pointer friction discs 3! and 303 are moved an angular distance of nine dial divisions or by the gear 259 attached to the hundredths ratchet I58, and the pointer 212 is moved only until it is stopped against the stop pins .294 and 295. In this condition, the unit indicator is in its zero position ready to start a new line.

If the unit indicator herein disclosed is applied to any other system of unit indication where the em has a value other than eighteen units, it would still be the practice to have the return key count nine units. However, for systems where the em has a unit count greater than eighteen units, it would be necessary to actuate the return key more than once at the end of each line. Thus, where one em equals eighteen units. or less, it is only necessary to strike the return key (which controls a nine-unit movement) once at the end of each line. But where one em has a unit count more than eighteen units, up to and including thirty-six units, it is necessary to actuate the return key (nine units) twice at the end of each line; and three times for values over thirty-six units up to and including fifty-four units, etc. An alternative method which may be used with an em space of 36 units or less would be to equip the return key with a 99-unit count, and thus effect the proper resetting of the unit indicator by a single actuation of the return key,

Referring again to the condition where one em equals 18 units, a full column measure, as indicated by the position of matrix pointer 21 against its stop, as is disclosed-in Patent No. 2,059,250, may not be an even multiple of nine units or ens, but may equal a certain number of ens plus a, certain number (less than nine) of units. In such cases, the unit indicator would not start each line on the wheel", with an initial reading of zero, but would start each line with a reading equal to -1, 2, 3, 4, +4, +3, +2, or +1 for an extra number of units of l, 2, 3, 4, 5, 6, '7, or 8, respectively, over the last multiple of nine units. Therefore, when starting the line on the wheel the stop pins 294 and 295 should penetrate the stop holes 296 corresponding to the two zerograduations; but when starting th line 011 the wheel the stop pins 294 and 295 should penetrate the stop holes 296 corresponding to the correct add or subtract" graduations according to the number of units by which the length of line exceeds an even multiple of nine units or ens.

Thousandths indicator The three-pointer method of line measure- I mum indication of 9.999.

ment and iustlflcation, using the matrix pointer '21 and the space band pointers 2828 (Fig. 1)

as disclosed and described in Patent No. 2,059,250, has distinct advantages in that it is extremely simple, easily understood, and can be read and interpreted at a glance, Thus, with this method, all that the operator needs to know about justification is that all the lines oi. composition will justify and should be ended when the matrix pointer rests between the two space band' pointers. It has been found desirable, in the preparation of certain types of composition, to supplement the three-pointer method of indication by a means for indicating to the operator exactly how much set-wise space remains in the line or column measure. When using unit matrices, this accuracy may be provided by the unit indicator previously described, but a unit indicator is not applicable when using non-unit matrices. Accordingly, the present invention provides a thousandths indicator, indicated generally as 24 (Fig. 1). which will supplement the three-pointer method of line measurement and justification and will iniorm the operator at any point within the line, as to the exact difierence in thousandths of an inch between the column measure or length of line and the cumulative set-wise thickness oi the assembled matrices and minimum thicknesses of space bands, by means 01' subtraction to zero from a setting equivalent to the number of thousandths of an inch in the column measure or length of line; or conversely, to inform the operator at any point within the line as to the exact cumulative setwise thickness of the assembled matrices and minimum thicknesses of space bands by means of addition from a setting of zero up to any reading between zero and 9.999".

The apparatus shown in Figs. 1 and 2 and described above uses a decimal counting system. For general use, the pointer indication is desirable since it provides a continuous picture of the justiiication problem in the line being composed without requiring constant mathematical interpretation by the operator. Accordingly, it must be understood that the thousandths indicator (indicated generally as 24 in Fig. 1 and disclosed in detail in Figs. 1-13 inclusive) supplements but does not replace the matrix pointer 21. It is therefore provided that the differential accumulator embodied in the principal structure and the thousandths indicator 24, which is designed as an attachment, be capable of simultaneous operation under control of the three counting ratchets of the differential accumulator.

The thousandths indicator (Fig. '1) consists of a four-dial structure, in which the three dials of lower order are driven from gears secured to the tens, hundredths, and thousandths counting ratchets in the differential accumulator, and the fourth dial, which isdriven only by the carryover mechanism of the dial oi the next lower order, is used to permit accumulation to a maxi- Associated with each dial in the thousandths indicator is a carryover wheel which functions when the dial passes through zero, to advance the dial of the next higher order by one unit. This carryover actuationis timed to follow the principal actuation of the column dials. The structure as will presently appear provides a linkage from the perforator main shaft to time properly this carryoveroperation. Mechanism is also provided to return automatically all dials to their zero position upon the operation of a return" key after a particular totalization has been attained. The restarting operation is accomplished under control of a linkage from the return clutch of the perforator, through manual selection of the return key upon the periorator keyboard; Two methods of indication will be described, one in which the dials are restored to a zero reading at the end of each line in the conventional manner and indicate at any time, during composition of a line, the cumulative length 01 assembled matrices and minimum thicknesses of space bands, and a second embodiment in which the dials are reset to the decimal value of the column measure or length of line and operate subtractively during composition of a line to indicate at any time the amount of the column measure yet to be filled with matrices.

In Fig. 9 is shown a general top view (with certain parts omitted) of the thousandths indicator and its associated shafts and gears by means of which selective operation of the three counting ratchets oi the differential accumulator is transmitted to the three corresponding sections of the thousandths indicator. Counting ratchets I51, I58, and I59 are, as previously described, a part of the differential accumulator mechanism of the principal structure disclosed in Fig. 2. Associated with ratchets I51, I58, and I59 (Fig. 9) and carried thereby on suitable studs are gears 3I5, 3I6, and 3, respectively. As in the case of the unit indicator, the planetary gears indicated in the principal structure as carried by the ratchets I51, I58, and I59 are for purposes of the presently described embodiment carried by gears 3I5, 3I6, and 3I1 and act through their associated internal gears to combine the incremental movements of the ratchets I51, I58, and I59 to impart to the matrix pointer 21, a movement which. is a totalization of the movements of the various counting ratchet mechanisms oi the differential accumulator. As described in the disclosure of the principal structure, each of the counting ratchets I51, I58, and I59 is selectively rotated in varying amounts from zero to nine teeth, and thus provides the same quality of motion as is normally provided by the manually operated column actuators of machines of the type shown in U. S. Patent No. 762,521 which employ thousandths indicators of the type herein disclosed. In order to utilize this motion, gear 3I1 is afilxed to ratchet I59,

gear 3I5 is aflixed to ratchet I58, and gear 3I5 is afiixed to ratchet I51. These gears engage gears 3l8, 3I9, and 32I, respectively, and permit the motion of the ratchet mechanisms of the differentlal accumulator to be transmitted through two sets of nested shafts to the thousandths indicator 24, which is located as viewed in Fig. 1, to the left of the matrix pointer 21, and faces the operator, so that the dial indication is easily visible, and can be compared readily with the matrix pointer indication.

As indicated in Fig. 9, gear 3" on the thousandths ratchet I59 meshes with the gear 32I aflixed to a shaft 324 which forms the center of the nested group of shafts 322, 323, and 324 appropriately journaled on brackets (not shown) mounted on the base 2|. At the right end of shaft 324 as viewed in Fig. 9 is afllxed a beveled gear 325 which meshes with a beveled gear 328 aflixed to a shaft 321 which forms the center of a nested group of shafts 321, 328, and 329 also suitably carried on base 2|. Afiixed to nested shafts 322 and 323 are beveled gears 3H) and 329, respectively, which mesh with beveled gears 339 and 350 aflixed to shafts 32! and 329, respectively. may not be merged in the principal rotation im- To shaft 321 is afllxed, adja cent the thousandths parted to the hundredths indicator by idler gear indicator 24, a spur gear 331. Likewise, to shafts 335, latch 351 has been provided which restralns 323 and 323 are affixed gears 332 and 333, respeccam 343 from operating until after the princi tively. To impart the desired direction of rotapal rotation has been completed. In manually tion to the elements of the thousandths indicator operating calculating machines employing thou- 24, idler gears 334 335 and 336 are loosely carsandths indicators analogous to that disclosed by ried on a shaft 331 arranged parallel to the nested the present invention, the principal rotation is shafts. imparted to gear 333 by a manually operated col- Figs. 10 and 11 illustrate well-known arrange- 10 umn actuator, and latch 35'! is disengaged by a ments for controlling the operation of the dials pin carried by the column actuator at a point loof the thousandths indicator, and for a detailed cated substantially as indicated by dotted circle description of this type of mechanism, reference 362. To simulate this manual control of the may be had to U. S. Patent No. 762,521, dated June carryover mechanism, the device of the present 14, 1904. Accordingly, for purposes of the present 15 invention provides a shaft 363 which carries three disclosure, this particular mechanism will be deidentical arms 364, one associated with the hunscribed only briefly. Having reference to Fig. 10, dredths lantern wheel 342, one associated with the thousandths driving gear 33! is shown meshed the tenths lantern wheel, and one associated with with idler gear 334 which, in turn, is meshed with the units lantern wheel. Arms 364 are fixed to a gear 338 carried on a shaft 340 which is part shaft 363, which also has fixed thereto an arm 365 of the existing calculating machine structure empivotally connected to a link 366. As shown in bodied in the thousandths indicator of the pres- Fig. 9, the left-hand end of link 366 is articulated ent disclosure. Gear 333 is afilxed to an internal to the vertically extending arm of a bell crank ratchet 339 which is engaged by a spring-biased 41I rockably mounted upon stub shaft 412. The pawl 3 carried on a lantern wheel 342, Figs. 8, horizontally extending arm of the bell crank 4H 10 and 11. Accordingly, counterclockwise motion is disposed above one end of a cam follower lever of gear 33l results in counterclockwise motion of 4 3 w ic is mounted intermediate its s 1111011 lantern wheel 342 As shown in Fig 8 gear 341 a pivot pin (not shown) and has a follower roll aihxed to wheel 342, meshes with a gear 343 car- 474 in engagement w1th one of the cams I65 carried on shaft 344, which permits of a more con- Tied by main Op ti Cam Sleeve 43. Link 366 venicnt location of the indicator dial 312 and v is urged leftwardly, as viewed in Fig. 9, by a tenmakes it more readilywisible to the operator. sion spring 41 and o ma y engages a fixed Figs. 10 and 11 are analogous to Figs. 2 and 3 of stop 411. Lever 413 is actuated according to the Patent No. 762,521 and are chosen because they (IQ-M0111 of cam but en s bell crank 41| machines to which the patent relates and of the mum radius. At other times, lever 413 rocks out thousandths indicator which may be incorporated Of engagement With bell Crank 47L T s, a1-

into the apparatus embodying the present inventhough the contour of am 65 imparts smooth on and gentle motion to the follower lever 413, the

Briefly, the carryover operation is a follows; effectiveness of the lever upon bell crank "I is The carryover wheel or gear (Figg 8 and confined t0 a few degrees Of rotation Of cam is mounted on haft 345 and meshes with the gear andat all other times, lever 413 undergoes idle 341 afiixed to lantern wheel 342. Carryover wheel motion Ou f agement with bell crank 41!. 345 rotates one-half revolution for every revolu- 45 In thls manner, ha 36 1s rotated under contlon of gem 34 and tenslons a Sprmg 343 which trol of cam I65 (Fig 1) carried on main shaft 32 1s constantly urgmg a cam 349' p 10 and 11, and is so timed that latch arm 35'! is rotated m a clockwlse dlrectlon Cam 4 Whwh is counterclockwise by means of its associat d lever ried on shaft 346, is restrained from movement 3541 F cQntrOl 356 a d'cam I65 just by escapement pawls 5 and 352 which become 00 following the conclusion of the ratchet feeding effective alternately under the control of a roller Operation It is the object f this structure to 353 (carried on carryover gear 345), cams 354 provlqie, under Control Of cam a timed seand 355, guard 355 and latch 351 as is f ll set quential operation of the dials, with the primary forth in Patent 762,521; The mechanism actuation under control of the counting ratchets shown in Fig 10 is associated with a dial of a of the differential accumulator, and the followmg lower order whereas the mechanism shown in carryover actuation under control of latch 351.

Fig. 11 is actuated by the mechanism shown in Havmg reference to 8, gear is operated Fig. 10 but is associated with the lantern wheel f the thousandths ratchet I59 and engages idler gear 334 which, in turn, engages gear 338 60 affixed to the internal ratchet 339 (Fig. 10). A gear 341 which is affixed to lantern wheel 342, drives carryover wheel 345 and also engages idler imparts a counterclockwise rotation to lever 353 the reset dial 372 are visible through a window (rug. 11) a o m whlch Games atfts 313 located in cover 3'". Reset dial or drum 312 right extremity a paw1359- Due to the Operatlon is provided with a. knurled flange 3,14 extending just described, pawl 35! rises, and engages a throu h slots 0 pin 36! on the lan ern Whee and imparts shown in Fig. 1? 12251 122 1:31;: l ar e g unterclockwise rotation to the lantern Wheel vided for use in manually setting dials 312 as will 342.in the amount of one unit or angular step. hereinafter appear A resetting structure carried on shaft 344 is However, in, order that this carryover rotation 7 and 12, against provided in the thousandth: indicator of the present invention for automatic resetting of the dials 398 to a predeterminedand manually settable column measure indication, instead of to zero as is customary in existing calculating machines.

Having reference to Figs. 12 and 13, it is observed. that dial 398 and its associated gear 391 are driven by idler gear 343 which is free to rotate on reset shaft 344. Gear 343 carries a stud or reset pin 315. Since gears 343 and 381 are continually in mesh, and as shown in Fig. '1, have the same number and pitch of teeth, it is evident that for each of the ten angular positions of dial 368, in which the digits are centered under window 369, gear 343 and pin 315 also have a corresponding angular position. n the peripheral surface of dial 312 are reference digits, by means of which the position of dial 312 is set. Dial 312 carries on its interior wall a radially slotted disc 316. Shaft 344 carries a pin 311 which normally engages one of the ten slots in disc 319. As will hereinafter appear, shaft 344 has a definite angular stop position, so that pin 311 always occupies a definite angular position when the shaft is in its stop position. When it is desired to change the relation between a resetting drum 312 and shaft 344, the shaft is moved leftwardly by the manual means shown in Fig. '1, which comprises a manual reset lever'318 afilxed to a shaft 319 mounted in bracket 381. Also fixed to shaft 319 in alignment with shaft 344 is a vertical lever 332. Positioned between a disc 393 fixed to shaft 344 is a helical compression spring 384. Thus, when counterclockwise rotation is imparted to lever 318, similar rotation, through shaft 319, is imparted to lever 382 which will cause shaft 344 to be shifted toward the left, as viewed in Figs. '1 the action of compression spring 384. This motion of shaft 344 will cause pin 311 to be moved out of engagement with the slots in disc 31 B, whereupon through the medium of knurled flange 314 to present any desired digital indication through the window 313 (Fig. 8). When each of the dials 312 has been set, for example as shown in Fig. '1, pressure is released from lever 318 to permit spring 384 to restore shaft 344 to its rightward position to bring pin 311 into engagement with a radial slot in disc- 315.

As shown in Fig. 13, a reset spring 385 is riveted to the drum 312 and cooperates with pin 315 carried on gear 343. Shaft 344 makes one complete revolution during the resetting operation, in clockwise direction (Fig. 13). Accordingly, reset spring 385 will move from its initial position, which can manually be adjusted to any one of ten definite angular positions as previously described, through a complete revolution and will return to its starting pos'tion. During this revo lution, reset spring 385 will pick up pin 315 in any angular position, and restore this gear to an initiai angular position as determined by the manual setting of drum 312. This resetting operation moves the dials, carryover wheel 345, and the lantern wheels 342 in their normal direction of rotation, but the rotation is not transmitted back through the gears 334 and 33! and nested shafts to the counting ratchets of the differential accumulator, because the internal ratchet arrangement comprising ratchet 339 (Fig. and pawl 34i between the lantern wheels 342 and gears 334 permits free rotation of the dials and lantern wheels during the reset operation. It is observed that during normal counting operation, the gears 343 can rotate in their normal direction without dial 312 is free to be rotated interference between pin 313 and spring 33!, since the spring 385 readily yields to the left (Fig. 12) and permits passage of pin fliither'eover.

It is necessary, however, to prevent the carryover mechanism from operating during the resetting cycle, since there are certain settings in which this carryover operation would render the final position of the dials incorrect. Accordingly, as shown in Fig. 8, there is provided a lever 388 associated with each carryover feed pawl 399 (Figs. 8 and 11). Levers 338 are nxed to and actuated by a shaft 381 which has secured thereto a depending arm 338. Arm 388 is pivoted to a link 389 which is articulated at its opposite end to the lower arm 419' fixed to rock shaft 419. Rock shaft 419 also has secured thereto an arm 43i extending parallel to and above shaft 32. At its free end, arm 48l is provided with cam follower roll 482 which engages cam 39!. When cam 39i moves follower roll outwardly radially of shaft 32, rock shaft 419 is rocked clockwise, and through arm 418 reciprocatory movement (leftward as viewed in Fig. 9, rightward as viewed in Fig. 8) is imparted to link 389. Levers 383 (Fig. 8) are thus rocked counterclockwise, and pawls 359 are disengaged from lantern wheels 342 during the carryover operation.

Fig. 1 shows a front view indicator 24 with the cover removed and with the reset drums 312 manually set to provide automatic return to a column or length of line indication of 1.980", which setting is accomplished as previously described through the operation of manual reset lever 318 and manual actuation of knurled flanges 314. It is noted that axial recip'rocation of shaft 344 is rendered possible by means of the slot and key construction of a hub 393 and slotted hub 394. Hub 394 is affixed to a shaft 395 suitably journaled in bracket 398 and terminates in a beveled gear 391 which meshes with a beveled gear 398 carried on a shaft 399, which terminates, as indicated in Fig. 9, in a gear 49l afllxed thereto. Gear 49| meshes with a gear 492 integral with reset sleeve 392. Accordingly,

, it is apparent that shaft 344 may reciprocate axially during the manual setting 'of reset dials 312 and still maintain its angular position as deterders the carryover feed pawls mined by gears 391 and 393 and the stop position of shaft 399. Referring again to Fig. 9, it will be noted that gear 49l is drven by gear 492 on the reset sleeve 392 which, in turn. is driven by a conventional grab clutch (not shown). As shown in Fig. 14, gear 492 is larger in diameter than gear 49l and has a portion of its teeth removed as shown at 493. Shaft 399 and its associated gear 49! are maintained in an accurate stop position by means of a detent (not shown). When the return clutch is actuated by the "return key on the keyboard; return sleeve 392 rotates in a counter-clockwise direction (as viewed in Fig. 14) and as soon as this rotation begins, cam 39 I, through suitable linkage, imparts rightward motion to link 389 (Fig. 8), thus rotating lever 389 about shaft 381 to move feed pawls 359 into a clockwise position where they will clear the pins 33! of the lantern wheels 342 during any carryover operation which may occur when a dial is reset through the zero position. This ren- 359 ineffective, but permits normal operation of carryover spring 348. Immediately thereafter, as return sleeve 392 continues its rotation, the teeth on gear 492 mesh with the teeth on gear 49L Gear 49l is thereby turned exactly one revolution and returns to its detented stop position before ar 492 has of the thousandth? completed its rotation. As viewed in ms. 7, it is seen that as shaft 399 is rotated clockwise, shaft 344, and hence dials 312, are rotated in such direction as to cause springs 335 to overtake and pick up pins 313, and since dials 312 make one complete revolution, it is evident that in whatever angular position the various pins 315 happen to be they will be picked up and returned by springs 365 to their predetermined return positions, for example, inasmuch as dials 312 in the present illustration are shown set for a column measure of 1.980", dials 363 will, during the return function just described, be picked up and returned to the same indication or column measure, which in the present example is 1.980". During the final period of movement of gear 492 within which interval gear 4|Il is at rest, cam 39! imparts leftward movement (as viewed in Fig. 8) to link 399 and permits carryover pawls 359 to return to their normal operative positions in which they may engage the pins 36l on lantern wheels 342 during normal carryover operations. Return sleeve 392 also carries a cam 239 (Fig. 9), which, upon the cyclic rotation of sleeve 392, controls through suitable linkage (not shown) the return oi the matrix pointer 21 to its beginning of line position, in the manner disclosed in aforementioned Patent 2,083,570.

Referring to Fig. 1, the thousandths indicator 24 is shown with its cover in place, wherein the upper row of windows 369 are provided for indication of units, tenths, hundredths, and thousandths. At any time during the assembly of a line, the digits exhibited through these windows indicate the remainder of the column measure which must be filled with matrices. During the composition of the line, the resetting dials indicate the full column measure, and are visible to the operator through the lower row of windows 313.

It is obvious that the thousandths indicator can be used either additively or subtractively merely by changing the sequence and location of the numbers on the indicator dials 368 and the reset dials 312.

When employing the thousandths indicator, the right-hand space band pointer 29 would be rendered ineffective. Under thi condition, the left-hand pointer deflection would be adjusted to indicate on'the scale the net expansion provided by the space bands in the line, the minimum thickness of the space bands would then be counted by a suitable arrangement of counting elements positioned in the counting magazine and operated by the space band lever.

Multiple counting magazine control In Figs. 15 and 16 is disclosed a modification of the structure hereinbefore described embodying provision for a multiplicity of counting magazines. It is the purpose of this modification to provide a keyboard perforator and counter with four counting magazines 4H, H2, H3, and 4 which is equivalent in arrangement and counting capacity to the four matrix storage magazines provided on commercial mixer line-casting machines. When eq'uipped With this structure, the keyboard perforator and counter gives the operator facilities for perforating a single strip of tape which may be used to control the assembly of matrices from all four magazines of a commercial mixer linecasting machine. This modification of the principal structure operates under control of four key rods on the perforator keyboard to permit the operator to select any one of the tour counting magazines and to render the selected magazine operative from the character keys on the keyboard to control the counting action of a single differential accumulator unit 22 (Fig.2).

The four counting magazines 4H, H2, H3, and 4", for purposes of this disclosure. are arranged in two pairs. The upper pair is assigned to the side or auxiliary magazines of the linecasting machine, and the lower pair is assigned to the main magazines. Operation of a character keylever is routed to one of the four magazines by means of the linkage shown in Fig. 15 and the control structure shown in Fig. 16. The key rod assembly 5 is analogous to the construction, location, and operation of keytop assembly 33 (Fig. 2) of the principal structure previously described. The key rods 6 act to operate keylevers 4" which, through a permutation selecting mechanism 4| 3, control the perforation of the tape in a manner similar to selector mechanism 38 of the principal structure. To keylever 4" are pivotally connected vertical links 9 and 42l which are pivotally connected at their upper ends to levers 422 and 423, which are in turn pivotally carried in a magazine shift member 424. Levers 422 and 423 cooperate with bell cranks 425 and 426, respectively, to control the selection of counting elements 421, in a manner similar to that described in connection with the principal structure. Bell crank levers 425 and 426 are carried in a case shift member 424 which is shiftable longitudinall in a manner similar to that shown in Fig. 1 and previously described. A corresponding vane 429 in each of the four levels engages a. single vertical connecting rod 43l to control the single associated stop member 432 comparable to that shown in Fig. 2. By this means, the dillerential accumulator may be controlled from any one of the four levels in which a'counting element 421 may be operated.

Associated with links 9 and 42l and extending vertically therefrom, and pivoted to levers 422 and 423 are links 439 and 433, respectively, which are pivotally connected at their upper ends to levers 434 and 435, respectively, similar to levers 422 and 423. Levers 434 and- 435 are pivotally carried in a magazine shift member 436, similar to member 424. Likewise, levers 434 and 435 are adapted to be operatively associated with bell crank levers 431 and 439, respectively, to operate, in turn, counting elements 421 of the upper group'of counting magazines 3 and 4". Levers 431 and 436 are carried in case shift member 439 similar in construction and operation to member 423. Case shift members 428 and 439 may either be rigidl connected to shift to the left or right as a single unit under the influence of the shift and unshift keys, or it may be desirable to move the case shift members 428 and 439 individually under the control of separate individual keylevers or'to disable their movement entirely.

As shown in Fig. 16, the upper and lower magazine shift members 424 and 436 are carried on the lower and upper arms, respectively, of a cradle member I which is pivotally mounted on a shaft 442 suitably mounted in the housing 449. Afiixed to the hub of the cradle I are brackets 443 and 444 to the extremities of which are articulated the upper ends of links 445 and 446, respectively. Link us is pivoted to a keylever 4n, and link 446 is pivoted to a keylever 448. Upon actuation of keylever 441, cradle I will, through link 445, be rocked to its counterclockwise position, bringing the upper magazine shift member 436 toward the bell cranks 431 and 433 to bring levers 434 or 435 into cooperative engagement therewith. By the same movement of cradle I, the lower magazine shift member 424 is moved away from the bell crank levers 425 and 426, thus drawing levers 422 and 423 out of cooperative engagement with their respective bell crank levers. A spring actuated detent member 445 is provided to hold cradle I in one or the other of its operative positions. On the other hand, to return cradle I to the clockwise position shown in Fig. 16, keylever 443 is actuated, which will, through link 443 and bracket 444, impart clockwise rotation to cradle 44I whereat it will be retained by detent 443.

when magazine shift members 424 or 426 are thus brought into cooperative engagement with their associated bell cranks, further means is provided for bringing levers 422 or 423, or 434 or 435 into cooperative engagement with their respective bell cranks. To effect this control, magazine shift member 424 is provided with a bracket 45l which is articulated to a link 452 pivotally carried on keylever 453. Member 424 is also provided with a bracket 454 to which is articulated a link 455 pivotally carried on a keylever 456. At the extremity of bracket 454 is pivoted the lower end of a link 451, the upper end of which is pivoted to a bracket 456 secured to the upper magazine shift member 435. Thus, when keylever 455 is actuated, magazine shift member 424 will, through link 455, be rotated to its counterclockwise position to be held thereat by a spring actuated detent member 455. Similar clockwise rotation will be imparted through link 451 to upper magazine shift member 436. To return magazine shift members 424 and 436 to their clockwise position, keylever 453 is actuated which, through link 452, effectuates this rotation.

With the structure just disclosed, it is seen that to bring lever 422 into cooperative engagement with bell crank 425 to control the counting elements 421 carried in counting magazine 4! I, it is necessary first to operate keylever 443 which will advance the lower magazine shift member 424 toward the bell cranks 425 and 426, following which keylever 453 is actuated, which will bring lever 422 into cooperative engagement with bell crank 425. Similarly, to bring lever 423 into operative engagement with bell crank 425, it is necessary first to operate keylever 443 and then to follow this operation with the actuation of keylever 456. Likewise, to bring lever 434 into cooperative engagement with bell crank lever 431, it is necessary first to operate keylever 441 and then to follow with the actuation oi keylever 453. Finally, to bring lever 435 into cooperative engagement with bell crank lever 433, keylever 441 is first operated, which is followed by the actuation of keylever 455.

Alternate ratchet feed lever mechanism In Fig. 17 is shown an alternative arrangement for imparting evenly spaced increments of angular motion to the ratchet feed lever 4" which is analogous to ratchet feed levers I53, I54, or I55. In this illustration, lever 4" is shown as being pivotally carried .on the hub of its associated ratchet wheel 454, which, in turn, is carried on a shaft 452 which is coincident with the center line of the shafts (comparable to shafts I16, I and 264) contained in the diiierential accumulaior unit. In contradistinction to the showing of the ratchet feed lever mechanism of the principal embodiment, as shown in Fig, 1, the view shown in Fig. 1'1 is taken from the rear of the apparatus. To the opposite end of lever I is carried a pawl 463 which cooperates with a feed ratchet 464. In the arrangement shown, the uniformly spaced stop levers 465 (analogous to stop levers I46, I5I, and I52) are provided with individual counting stop pins 455, Pins 455 are arranged as shown at a predetermined and calculated distance from a reference line in such a manner that lines drawn through the center of rotation of shalt 462 and tangent to stop pins 465 will define equal angular distances, and hence ratchet feed lever 45I- will be rotated evenly spaced angular distances corresponding to the angle between two teeth 461 on ratchet 454. Here again nine identical stop bar 455 can be guided in a casting 463 having parallel slots similar to guide casting I43 (Fig. 1). Thus, when ratchet feed lever 46I is actuated in a clockwise direction by mechanism similar to that shown in Fig. 1, controlled by a cam I55, its rotation will be arrested by a stop pin 455 on an operated stop bar 465, causing pawl 453 to advance clockwise over the teeth 461, picking up a number of teeth equivalent to the numerical position of the stop pin 466. Thence, upon the counterclockwise rotation of lever 45I due to the pull of a spring 459, ratchet wheel 464 will be rotated a corresponding angular amount.

In actual use the perforator equipped with the exact matrix size counting mechanism, as described in the foregoing specification, may be equipped with the unit indicator, the thousandths indicator or both. Provision is made in this perforator for a multiplicity of interchangeable counting magazines, and each counting magazine may be equipped with counting elements corresponding in arrangement and counting values with the arrangement and matrix sizes of a font of matrices as channeled in a corresponding linecasting machine storage magazine. Further, each counting magazine position in the perforator may be assigned to count matrix sizes in a particular storage magazine position of the linecasting machine, so that a definite correspondence may be established between the matrix sizes selectively counted by the perforator, and the matrices selectively released for assembly in the linecasting machine. Accordingly, this perforator may be used to prepare a continuous tape for automatic control of multi-magazine linecasting machines, and may be equipped with an arrangement of counting magazines to correspend with any arrangement of matrix storage magazines which may be installed on the linecasting machine being controlled.

Although the present invention has been disclosed and described with reference to the. P e ration of a record form for the control or a linecasting machine, it is, of course, understood that the invention is capable of embodiment in many and widely varied forms other than that specifically disclosed without departing from the spirit and scope of the present invention.

What is claimed is:

1. In combination, an element movable in variable additive amounts, a periodically operable instrumentality, a source of power for operating said instrumentality periodically, a plurality oi rotatable impellers, means acting by negative operation for conditioning said impellers permutably for rotation by said instrumentality, and a diflerential accumulator interposed between said impellers and said element operative to move 

